Designers, Tradesmen, Woodworker, Craftsmen, Fabricators and Technicians. The Measure Master Pro is an ideal tool for anyone who works with dimensions. It simplifies linear, area or volume calculations when planning, building or assembling practically any project. This simple and powerful calculator fits in a pocket, briefcase or tool pouch and is immediately available to solve dimensional math, conversions and cost estimates. Additional Features: cost per unit: solve unit cost and pricing. "Paperless" Tape: review last 20 entries, double-check totals. Standard Calculations: work as a regular math calculator with +, -, x,